Deep Sky Object in Summer
NGC6572(Planetary Nebula in Ophiuchus)

Date & Time: Jun 2 2001, 23:40 JST(+0900), 40sec. exposed 6shots
Optical: Meade 25cm(10") Schmidt-Cassegrain, afocal method with LV12mm eyepiece
Synthesized focal length f=2583mm (equivalent f=15222mm in 35mm film format)
Auto-guided with Meade LX200 Equatorial
Digital Camera: CASIO QV2800UX
Location: Ooizumi vil., Yamanashi pref.

Camera Settings: Mode.....1600×1200 FINE
Lens.....f=12.4mm (equivalent f=83mm in 35mm film format), Stop: F3.2
CCD sensitivity.....ISO160, White Balance.....Daylight

NGC6572 / Planetary Nebula, type IIa
R.A.18h 12m 6.0s (2000.0)
Dec.+06° 51' 00" (2000.0)
Apparent Size16×13"
Real Size0.19×0.16 light yrs.
Distance2470 light yrs.
This image shows you a compact but easy-to-seeing planetary nebula of NGC6572, which is positioned in eastern region of Ophiuchus. You can find it around 11 degrees SE of alpha Oph, Ras Alhague. The nebula has an apparent size of about 15 arc seconds, you can distinguish NGC6572 from other stars and detect the nebula having bluishcolor only with compact telescopes, but no striking structures detected. NGC6572 is a remnant of star 2500 light years away.

Cat's eye Nebula(NGC6543)


Copyright(c) 2001 by Naoyuki Kurita, All rights reserved.
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